Timmy the Cruel was a ghoul in the service of the Scourge. There have been many tales of his origins. Some have speculated that he was a young child, rescued by @Prince Arthas from orcs, only to be damned by the horrors Arthas would unleash upon the land upon his return from Northrend. Others have said that Timmy was a mighty warrior and champion of Lordaeron before he fell to the Scourge, who twisted him into an evil and warped creature. Others say that Timmy, the great champion, joined the Scourge willingly, committing terrible acts in return for dark powers. Some others have said that Timmy was always had a cruel and sadistic streak in him, born of the pent up rage of years of taunting and bullying he endured as a child because of his name.

Whatever the truth, Arthas and @Jania encountered Timmy in Andorhal during the Third War, where he was trapped in a cage. The two seem to have ignored the trapped ghoul, and focused on their investigation of the plagued grain, which would lead them to the necromancer @Kel'thuzad on the outskirts of town. Sometime later, Timmy seemed to have escaped his cage, and made his way to the burning ruins of Stratholme. There, he would make his new home. Despite his rage and savagery in battle, however, Timmy the Cruel was eventually destroyed by adventurers.

Darkweaver Syth was an arakkoa cultist. He was a member of the Sethekk, a group of arakkoa who had turned away from the primal gods of the arakoa, and begun to worship an alien Old God. This Old God had promised them power and a greater place in the cosmic order, in return for them summoning it to Draenor. Talon King Ikiss, Syth's master and leader of the Sethekk, believed that the destruction of the draenic necropolis, Auchindoun, was caused by the arrival of their new god. As a result, he led his people to the shattered ruins of Auchindoun, where they made their new home, and waited for their master's commands.

Their master, his summoning ritual having been interrupted by Gul'dan long ago, was in fact partly materialized in Shadowmoon Valley, nowhere near the ruins of Auchindoun, and so the Sethekk waited in vain. Isfar, Syth's brother, soon lost faith and was thus banished. While Syth and Isfar's sister, Lakka, wished to accompany in his exile, Syth refused and had her locked in a cage.

Isfar, believing that Syth was too far gone, and fearing for his sister's safety, sent adventurers to rescue Lakka, and kill Syth. They were successful in their task, and also succeeded in liberating the Mask of Terokk, an item which once belonged to a legendary arakkoa hero, from him.

In an alternate past, Syth lived in a small hut in the Spires of Arak, a region lost in the destruction of Draenor. There he collected numerous texts, including the complete Saga of Terokk, the censored true history of the ancient araokkoan hero. He had also managed to locate the Eye of Anzu, a powerful artifact of shadow magic and divination, said to have been used by Terokk to commune with the raven god, Anzu. While it seems likely that his main timeline counterpart had been successful in retrieving the Eye, his alternate past self was not as lucky, as he was killed by the fanatical Adherents of Ruhkmar before he could do so.

Highlord Omokk was the leader of the Spirestone ogre tribe, an ogre tribe which made its home in Blackrock Spire, and continued to serve the Dark Horde. While Omokk rules the tribe in name, it is in fact Urok Doomhowl who truly commands the Spirestone. Through a mixture of dark magic, and duplicity, Urok effectively rules the tribe. This suits Urok fine, as that means that all the ogres who try and challenge for leadership fight Omokk instead of him. Omekk was killed by adventures, who took his head, and put it on a spike to draw Urok out of hiding.

Lord Skwol was one of the four Abyssal Lords, and member of the Abyssal council. Together with his fellow Abyssal council members, he commanded the Twilight's Hammer Clan in Silithus. He is known to be quite upset if summoned by people outside of the Twilight's Hammer Clan.

Skwol is a hydra, a species commonly aligned with the Old Gods and their minions, making his allegiance to them not much of a surprise. The fact the he can talk and seems quite intelligent, however, is a surprise, as most hydra don't go much past “RAWGH!” and trying to eat you. Not that Lord Skwol doesn't try to eat you, he's just much more polite about it.

Much like his compatriots and fellow members of the Abyssal Council, Baron Kazum, and High Marshal Whirlaxis, he and the Abyssal Council made no appearances in Cataclysm, despite their important relationship to the Twilight's Hammer Clan, and is presumed dead. He and the other members of the Abyssal Council are no longer summonable, and have been removed from the game.

Prince Thunderann was an air elemental prince, son of the Elemental Lord of Air, Al'Akir, weilder of Thunderfury, Blessed Blade of the Windseeker, and victim of treachery most foul.

Thunderaan was one of the many elementals who fought for the Old Gods against the Titans. Despite his successes against the minions of the Titans, he and his masters were defeated. The Elemental Lords and their minions were banished from Azeroth, and sent to their newly formed homes and prisons in the elemental planes, while the Old Gods were bound deep beneath the earth. Without the Old Gods to keep their Elemental Lords in line, however, the various elemental factions quickly began feuding with one and other. On particularly battle, the Elemental Sundering, took place in the core of Azeroth. While the forces of air and fire were briefly aligned, Ragnaros chose to betray his allies, and struck down Prince Thunderaan with the aid of his lieutents, Geddon and Garr.

Ragnaros feasted on the essence of the fallen elemental prince, but was not able to consume him entirely. So he bound what remained of Thunderaan's essence into a binding talisman, and then broke it in two, giving one half to Geddon and Garr. This seemed like it would be the end of Prince Thunderaan, however, by luck, found an ally in the Twilight cultist, Highlord Demitrian, who chose to worship him. Additional luck occurred when adventurers defeated Geddon and Garr, and brought their two halves of the binding talisman to him. Demitrian sought to release his master, however he was unable to recombine the two halves of the binding talisman on his own. So he convinced the adventurer to foot the bill, gather some rare and expensive materials and assembled the two halves of the binding talisman together into a sword. Oh, and they also needed so somehow extract the essence of Thunderaan that Ragnaros had consumed somehow.

Retrieving Thunderaan's stolen essence was actually the easy part, as it they only needed to destroy Ragnaros' corporeal form and banish him back to the Firelands. The adventure returned with it, and the ten bars of rare and expensive elementium and gave it to Demitrian, who used it to reinforce the vessel of rebirth, which was necessary for him to reform Prince Thunderaan and summon him. While Demitrian told the adventurer that he'd receive Thunderaan's blessing, that turned out not to be the case as Thunderaan proved to be quite hostile. The adventurers emerged victorious, and one of them claimed Thunderaan's sword, Thunderfury, Blessed Blade of the Windseeker as their own.

C'thun is one of the five Old Gods imprisoned within Azeroth. In ancient times, C'thun and its kin ruled Azeroth, commanding vast armies of elementals, and raining chaos across the world at will. When the Titans arrived at Azeroth, they were horrified at the state of the world, and immediately set about trying to set right and orderly what clearly must have gone horribly, horribly wrong.

C'thun itself fought against a Titan in single combat, on the ground that would one day be Sithilus. It was defeated, presumed dead by the Titans, and the Titan C'thun was said to have fallen (whether that meant it died, succumbed to corruption, or tripped is deliberately vague). In the end, the Titans won their war against the Old Gods. C'thun and its kin were defeated and imprisoned within Azeroth, and their elemental minions banished to the Elemental Planes. The Titans arranged Azeroth to their liking, and created specialized defences to contain the Old Gods and their minions forevermore. Content in their reordering of Azeroth, and that their defences were strong enough, and possess sufficient redundancy to survive any possible contingency, the Titans left Azeroth in the capable hands of their chosen Prime Designate, the Watcher Loken, and were absolutely certain nothing could possibly go horrible, horribly wrong again.

Your friends will abandon you.

C'thun watched and waited as life grew and evolved on the surface of Azeroth. Finding the silithid to have potential, C'thun uplifted them, reforming them in his image, and granting them sentience. These uplifted silithid, the Aqir, would spread across Ancient Kalimdor like a blight, their empire spreading from modern day Silithus to modern day Northrend. The trolls of the Gurubashi and Amani Empires, however, didn't like their expansionist attitudes, or the non-troll competition in empire building, and went to war against them. The trolls defeated the Aqir, and broke their empire into at least three different pieces. C'thun remained in direct control over the Aqir who remained in Sithilus, further directing their evolution to suit its needs and desires. The Aqir of the south, now known as the Qiraji, continued to worship their Old God, giving it its name, and helping it to reform itself on the surface of Azeroth.

Biding its time, watching as the mortals went about breaking stuff, like the entire planet, C'thun watched its army grow from their fortress city of Ahn'Qiraj. When it was ready, he unleashed the Qiraji upon the world. Expecting to meet little resistance, the Qiraji advance was suddenly halted by the Night Elves led by Fandrel Staghelm. The War of the Shifting Sands waged on for some time, but ended with the Qiraji trapped within their city. C'thun felt like it was imprisoned in a prison in a prison. It did not appreciate the redundancy the Night Elves and their dragon allies had unwittingly caused. Still, it wasn't a complete loss. Its Qiraji servants had learned some valuable lessons, and it now had several dragon they'd captured to experiment with. Biding its time once more, waited for someone, possibly an adventure looking for loot, title or cool mount, to reopen the Gates of Ahn'Qiraj.

You are already dead.

C'thun's patience was rewarded, and the Gates were reopened, with an army, the Might of Kalimdor, waiting outside. C'thun's Qiraji minions fought valiantly, but in the end they were defeated. General Rajaxx, Moam, Ossirian the Unscarred, The Prophet Skeram, all those royal silithid bugs, and even The Emperors were all killed. Soon, C'thun found himself staring down like forty adventurers as they stormed into his inner sanctum in the Temple of Ahn'Qiraj. As they say, it's all fun and game until someone loses an eye, and C'thun had one really big eye to lose.

A massive planetary parasite cannot be so easily slain, even by adventurers. C'thun was able to find an ally in the ogre mage and leader of the Twilight's Hammer, Cho'gall. Cho'gall traveled to the ruins of Ahn'Qiraj and made an effort to restore its avatar. His attempt to summon C'thun was, however, stopped. However, Cho'gall body had been warped by the experience, taking on aspects of C'thun's form as a result of the failed summoning. The ogre mage continued to serve as C'thun's agent until his own death at the ends of adventurers.

The living that meet its gaze will remain in its view for all eternity.

Shirrak the Dead Watcher was an undead construct built by Exarch Maladaar to watch over the souls of the draenei that still remained within the ruins of Auchindoun. One of the mad Exarch's many experiments in necromancy, Shirrak kinda looked like the observer demons who would sometimes align themselves with the Burning Legion, even though he totally wasn't. Shirrak fed on arcane magic, an abundant resource in the ruins of Auchindoun, and was capable of inhibiting spell casters from using magic in his presence.

Shirrak the Dead Watcher was killed by adventurers when they stormed the Auchenai Crypts in Auchindoun.

Ghamoo-Ra was once a peaceful giant turtle who dwelt within the shrine of Elune in the long forgotten ruins of Blackfathom Deeps. He had a fine home on a small island in an underwater cave where he lived with his turtle friends and family. Then, the Twlight's Hammer came.

They tormented him day and night. Slowly driving the kind turtle mad. They played loud music at all hours. They left garbage everywhere and never cleaned up after themselves. They awoke dark forces that had long slumbered deep beneath the lost shrine. They gave him the nickname Ghamoo-ra, and it stuck.

The Twilight's Hammer even turned their twisted magic on him once he had been sufficiently maddened. Further warping the hapless turtle. Their efforts to bind his will and bring him completely uncontrolled however was left undone, as adventurers interrupted the ritual before it could be completed. The mad turtle however still tried to eat the adventurers, and they killed him, putting the poor creature out of his misery.

Akil'zon was once a shaman of the Amani tribe. He possessed a natural affinity for the element of air, so Hex Lord Malacrass chose him to be the vessel for the power of the troll eagle god, Akil'zon, who's name he took following his empowering.

During... Budd Nedreck's... uhg... treasure hunting expedition to Zul'Aman, Akil'zon captured and held the dwarf, Harkor, captive, as Hex Lord Malacrass intended to sacrifice him and other captives as part of a dark ritual. Harkor was rescued by speedy adventurers, and would later join his fellow captive, Kraz, in hunting frost trolls in Northrend as a form of revenge. As for Akil'zon, he was killed.

That wasn't the end of Akil'zon though. He was somehow restored back to life as part of Amani's contribution to the Zanadalari Tribe's plans to create a new, united troll empire. However, he was soon killed once again by adventurers when they stormed Zul'Aman to put an end to the Zandalari Tribe's ambitions.